# US 10,864,027 B2 · Pre-contoured buttress plate for posterior wall acetabular fractures > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,027 B2 - Document ID: US10864027B2 - Status: Granted - Kind: B2 - Application number: 16/294,023 - Filed: 2019-03-06 - Published: 2019-07-04 - Granted: 2020-12-15 - Earliest claimed: 2016-10-20 - Applicants: Daniel Robert Schlatterer - Inventors: Daniel Robert Schlatterer - Web page: https://patentgrep.com/patent/US10864027B2 ## CPC - A61B 17/8061: {specially adapted for particular bones (A61B17/70 and A61B17/74 take precedence)} - A61B 17/8066: {for pelvic reconstruction} - A61B 17/809: {with bone-penetrating elements, e.g. blades or prongs (bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233)} - A61B 2017/564: {Methods for bone or joint treatment} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An improved posterior acetabular wall fracture buttress plate has a buttress plate having a pair of arms extending from a main plate. The main plate is pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface, the arms being 1.0 cm or less wide and bent lengthwise off horizontal about 38 degrees plus or minus 8 degrees to mimic a curvature of the hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees. This is a stand-alone buttress plate intended to accomplish a buttress effect similar to previous art of 2-3 pelvic plates. ## Claims ### Claim 1 A method of immobilizing a bone comprising the steps of: isolating a region of bone to be immobilized; reduction and temporary fixation of a plurality of fracture fragments with wires or reduction clamps; anatomic positioning of a buttress plate in a best buttress position; drilling and measurement steps for selected screw placement; removal of provisional fixation devices including wires and clamps; intra-operative fluoroscopic imaging to confirm fracture reduction and suitable buttress plate positioning; and fixation of screws. ### Claim 2 (depends on 1) The method of claim 1 further comprising the step of: stabilizing the bone in any and all situations of bone instability including, but not limited to situations of fracture, osteotomy, non-union and need or use for the bone binding including, but not limited to, an inclusion of metal plates or other hardware devices to achieve bone stabilization. ### Claim 3 (depends on 1) The method of claim 1 further comprises the step of: utilizing one or more metal plates or other hardware devices to stabilize the bone as indicated between different fracture patterns. ### Claim 4 (depends on 3) The method of claim 3 further comprises the step of: attaching a bone binding to the one or more metal plates or other hardware as indicated between different fracture patterns. ### Claim 5 (depends on 1) The method of claim 1 wherein the step of positioning the buttress plate in the best buttress position includes the buttress plate having a pair of arms extending from a main plate, the main plate being pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface. ### Claim 6 (depends on 5) The method of claim 5 wherein the arms are 1.0 cm or less wide and bent lengthwise off horizontal relative to the main plate 38 degrees plus or minus 8 degrees to mimic a curvature of a hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees. ### Claim 7 (depends on 6) The method of claim 6 wherein the main plate of the buttress plate has at least seven locking screw options or holes for positional fixation of a posterior wall fracture fragment. ### Claim 8 (depends on 7) The method of claim 7 wherein the buttress plate is configured to buttress and inclined and angularly positioned relative to the hip contour to support a fracture surface area by having the contoured main portion sized to allow rotation of the buttress plate. ### Claim 9 (depends on 8) The method of claim 8 wherein the undersurface of the buttress plate has scallops or ridges or protrusions to provide limited bone contact. ### Claim 10 A kit of buttress plates comprises: a plurality of buttress plates, each buttress plate having a main plate; wherein the kit has at least one smaller buttress plate with a small contoured curvature for smaller patients and at least one larger buttress plate with a larger contoured curvature for larger patients, the kit including one or more buttress plates having a pair of arms extending from the main plate, the main plate being pre-contoured with a concavity contoured to mimic a hip socket contour posteriorly along an undersurface bent lengthwise off horizontal relative to the main plate at 38 degrees plus or minus 8 degrees to mimic a curvature of the hip to yield an angle on the undersurface of 142 degrees plus or minus 8 degrees, the arms being 1.0 cm or less wide. ### Claim 11 (depends on 10) The kit of claim 10 wherein the larger buttress plate has a bend angle of 30 degrees off horizontal relative to the main plate yielding an angle of 150 degrees. ### Claim 12 (depends on 10) The kit of claim 10 wherein the smaller buttress plate has a bend angle of 45 degrees off horizontal relative to the main plate yielding an angle of 135 degrees.